XML 46 R1.htm IDEA: XBRL DOCUMENT v2.4.0.6
Document and Entity Information
6 Months Ended
Dec. 31, 2012
Jan. 30, 2013
Document and Entity Information    
Entity Registrant Name CARPENTER TECHNOLOGY CORP  
Entity Central Index Key 0000017843  
Document Type 10-Q  
Document Period End Date Dec. 31, 2012  
Amendment Flag false  
Current Fiscal Year End Date --06-30  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   52,694,342
Document Fiscal Year Focus 2013  
Document Fiscal Period Focus Q2